Abstract
A fast Fourier transformation (FFT)-based simulator was developed to analyze a recovered image of a hologram formed by polytopic multiplexing holographic data storage and to determine the positional tolerances of optical devices. By focusing the positional shift of 4f configuration devices (phase mask, SLM, polytopic filter, and camera), the number of FFT iterations was reduced, and the calculation speed was improved. Using the simulator, the positional tolerances of these devices were determined. Also, to validate the simulator, simulated readout images under defocuses of the phase mask and camera were compared with experimentally obtained images and found to agree well.
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